Hi.. Was told by doctor that my vitD was at 14 or 15 he called in to pharmacy vit D2 50000 took me over a week to start cus I was a bit nervous. But I did 1st time I took it got very dizzy, palpitations, chest pain, head pain, and lose stool..and very very tired I would dose off.. was like this for 2 days I thought I should wait cus it was my first dose took second dose a week later same thing. I would like to know if anyone had ever felt this while taking vit D2 is there any reason why this is happening... called my doctor he's on vacation waiting till he gets back my primiere doctor won't b in office till Friday.. Any advise would b greatly appreciated will continue to take being its so low